Unfortunately, I did not see the dymanic creation of a device like /dev/da0 that might have let me mount the camera and read files from it. (The problem was discussed in this thread.) I turned to the ports tree and found graphics/gphoto2, which I installed as a package:

orr:/home/richard$ sudo pkg_add -vr gphoto2

When done I followed the Gphoto2 documentation. First I checked for available ports: